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UkoKoshka [18]
1 year ago
13

Is the cell an open or closed system? Explain your answer using at least one example of a cell organelle and its function.

Biology
1 answer:
Maksim231197 [3]1 year ago
4 0

Answer:

In an open system matter and energy can be transferred ·

In a closed system only energy can be exchanged ·        

In an isolated system neither matter nor energy can be exchanged ·         The cell has to be an open system because it needs to exchange matter and energy and the only way to do so is through an open system ·        

As an open system the cell allows nutrients to enter the cell and waste products to exit the cell ·      

The cell does this through the use of a semi-permeable membrane

Explanation:

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3 years ago
6.Prokarytes differ from eukaryotes by
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Answer:

a. enclosing their DNA in a nucleus.

Explanation:

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3 years ago
Cells with a full set of chromosomes are referred to as diploid or 2n, whereas cells with half the chromosomes are haploid or n.
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Answer:

  • Diploid → Prophase, metaphase, and anaphase
  • Haploid → Telophase

Explanation:

During prophase I,  chromosomes get condensed. Each of the chromosomes gets in pair with its homologous one. They do so to make the crossing-over possible, a stage where they interchange their parts → 2n

During metaphase I, each of the homologous pairs is driven to the equatorial plane, where they randomly line up → 2n

During anaphase I, occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair → 2n  

In telophase I, half of the chromosomes are already in one of the poles, while the other half is on the other pole. Each group of chromosomes has now half the number of the original cell. The nuclear membrane forms again in each pole → n

Finally, occurs cytokinesis, which involves the invagination of the cell membrane and cytoplasmic division.

The two new cells are ready for meiosis II.

3 0
3 years ago
M is the midpoint of AD. Triangles A B M and D C M are connected at point M. Sides A B and C D are congruent. The lengths of sid
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Answer:

Reflection

Explanation:

E2020 certified answer

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What biomolecules are found in the cell membrane?
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